important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">又称左旋糖important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">。由甜菜菊或蔗糖important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">经酸解后分离而得的一种酮糖important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">。 important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"> 白色粉末型结晶。密度1.6g/cm3。熔点103～105℃(分解)。中毒剂量(小鼠，皮下)5000mg/kg。1g溶于15ml乙醇。14ml甲醇，易溶于水、热丙酮，溶于吡啶，乙胺和甲胺，微溶于冷丙酮。 important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"> 糖类important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">中甜的糖。存在于许多水果important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">及蜂蜜important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">中，亦是存在于牛与人精液important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">中惟一的糖，以呋喃糖important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">和吡喃糖important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">两种形式存在，在20℃的水溶液中含20%呋喃糖。 important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"> 用作生化试剂important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">，important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">患者食用及食品添加剂important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">等的工业原料。
制备方法：important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">果糖以游离的形态大量存在于水果的浆汁和糖蜜中，由菊芋水解可得到果糖。将含有果糖的多糖体菊粉（Inulin，在秋季，土木香，蒲公英，大丽花等根中菊粉含量可达40%之多）进行水解，生成果糖，经分离而得成品，这是生产果糖的方法之一。蔗糖是工业生产果糖丰富的原料，用稀酸或转化酶水解蔗糖，从混杂有D-葡萄糖的溶液中析离果糖，果糖不易结晶，但它与氢氧化钙形成不溶性的复合物，分离后，通入二氧化碳，即可得到果糖结晶。利用蔗糖发酵制葡聚糖的发酵糖液，经毡袋过滤器过滤，送入乙醇蒸馏塔回收乙醇，蒸馏后的废糖液加0.25%（重量/体积）活性炭搅拌，待液温降至40℃以下进行离子交换，分离得到果糖。目前工业上大规模生产采用淀粉水解制备葡萄糖，经固定化葡萄糖异构酶转化为转化糖，其中含有42%果糖和58%葡萄糖，商业上称果葡萄糖浆或高果糖浆。它的甜度与蔗糖相当，但具有天然蜂蜜香味和生产成本低等特点，已广泛用于饮料和糖果糕点等食品工业。 important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">
用途：important; float: none; word-spacing: 0px; font: 14px/24px arial, 宋体, sans-serif; text-transform: none; color: rgb(0,0,0); text-indent: 0px; white-space: normal; letter-spacing: normal; background-color: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">果糖有直接供给热能，补充体液及营养全身的，比葡萄糖容易吸收利用，用作供给能量补充体液比葡萄糖更佳。除作为药物外，也用于糖果，婴儿饮料中。果糖也用作生化试剂。
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